Dispensing valve



June 239 1,543,211 v L. KooPERsTElN I bIsPENsING VALVE med Nov. ze, 1925 /9 I Y '87" 6 l l v13 ll fr, f. i A

Cx y c Y. 4 @ff/J 0l/5 KogflgfR/)v *W4/4 J/LQ N f// ATTORNEY i Patented June 23, 1925.

UNITED LOUIS KOOPERSTEIN, 0F

PANY, or NEW YORK, Y., A

` 'conron.AT1oN, or New vorm.

DISPENSING VALVE.

Application led November 26, 1923. Seria1'N'o.`676,882.

To all whomt may concern:

Be it known= that l', Louis KoornnsrniN, a citizen of the United States, residing in New York, county and State opNew York,

have invented certain new and useful Improvements in Dispensing'Valves, of which -the following is a full, clear, and exact specilication. Y

This invention relates to that type of valve operated by push-rod or plunger, to dispense small quantities of liquid such as soap. The object ofthe present invention" is to provide a device of this type which is adapted to supply a measured quantity of the liquid, means also being provided for ejecting the liquid under air pressure.

The invention will be understood by reference to the accompanying drawing in which- Figure 1 is a longitudinal sectional elevation of an embodiment of the invention.

Figure 2 i-s a transverse section on the line 2-2, Fig. 1, and

.Figure 3 is a side elevation of the device.

By reference to the drawing, it will be seen that thev device comprises a casing 1 formed with a longitudinal chamber 2 having threaded within its rear end, a plug 3, the latter being formed with a threaded socket which receives the threaded end of a pipe 4 leading from the source of supply for the liquid. i

Longitudinally movable within chamber 2 is a rod 4 which is afforded a bearing surface near its inner end by plug 3, the latter being formed with a centrally disposed aperture to receive the rod. At its opposite end the rod is engaged by the headed end a of a push-rod b provided with an adjustable plunger A. The end of casing 1 is formed with a socket which receives a packing c surrounding push-rod b and held in position by the eXteriorly threaded plug c".

Liquid from the supply pipe 4 passes into the axial bore 5 formed in the end of rod 4X, and thence through port 6 into chamber 2. Y

Casing 1 is formed with a hollow domelike boss 7 which, at its upper end, is reduced in diameter to provide an annular shoulder 7X. the boss above said shoulder being threadled to receive a cap 8, the latter serving to hold in position a disk 9 which may bear the name of the manufacturer or any other When the parts are in their normal position, as illustrated in Fig. 2, the interior of boss 7 adords a reservoir 'hich is in communication with the supply pipey 4, the liquid flowing from chamber 2 into the reservoir.. Y

- The-device is provided with a discharge desired wording.

nozzle 10 which communicates with a chamnnw vonk, 1v. Y., As'srenon rro wris'r nIsrNFEc-rnve coivreo' i ber 11 formed within the casing 1, this chamberv being of relatively small diameter, so

-that a seat 12 is provided intermediate the two chambers against which seat a valve disk113 may rest, thus shutting od chamber 11 and discharge nozzle 10 from chamber 2 and the reservoir. Valve disk 13 is normally malntained in closed position by means of a helical spring 14, one end of the spring engaging plug 3 and the opposite end engagng the disk the latter being formed with a flanged head.

It will be seen by reference to Fig. 1 that rod b projects through valve disk 13. To prevent the passage of liquid from chamber 2 intermediate the rod 4 and the disk, the rod is provided with a packing 15; and a packing ring 16 is carried by the flanged head of valve disk 13.

In the operation of the device, depression of plunger A will impart an endwise movement to rod 4X against the action of a helical spring 18, one end of the said spring engaging a head 19 on rod 4X, the opposite end of the spring engaging block 3. In its movement, rod 4X carries port 6 beyond chamber 2 so that communication between the latter and supply pipe 4 is shut olf. Upon continued movement of the plunger A, its collar bx'will engage valve disk 13 and will move the same against the action of spring 14, to open connection between the reservoir and discharge nozzle 10. Therefore, the liquid within the reservoir will be discharged under the pressure of air contained in the top of the reservoir. The said air Hows downwardly with the liquid from the supply tank and passes, of course, to the point of highest elevation, i. e., to top of the reservoir. By varyingthe size of the reservoir, any desired quantity of liquid Y due to the closing of port 6, so that the pressure under which the liquid is forced through nozzle 10 is introduced by the air trapped in the top of the dome-like reservoir, and the compressive action of the valve disk 13 in its movement inwardly, inasmuch as the disk has a substantial inward movement before communication is effected between the discharge nozzle and the liquid.

Assuming the parts to be in the position illustrated in Fig. 1, but empty of the liquid, it will be' seen that the device aiiords a trap for air inasmuch as the discharge outlet is closed by disk 13. Now when .the liquid `under pressure enters the device through lport 6i, the air will be displaced by liquid and .will be forced under pressure to the top of' the dome-like reservoir, this pressure being equal to the pressure upon the liquid. When port 6 is closed by operation of the plunger and discharge outlet is opened by movement of the disk 13, the air under pressure in the top of the reservoir will exert a positive ejecting force upon the liquid so that the latter will be expelled from the versel of the iirst chamber in communieating with the latter, and a valve device for controlling the admission to and the discharge of liquid from the casing, the liquid being permitted to HowV to the second chamber via the first Chamber whereby air is trapped in said second chamber above the liquid, for the purpose described.

In testimony whereof, I have signed my name to this speciication in the presence of two subscribing witnesses.

Louis noorIiRsrrnN.A Witnesses:

IV. LEE HELMs, ERNESTINE KLINGER. 

